[ros-kernel] Re: [ros-cvs] CVSUpdate: reactos- Supportof Matroxdisplay card

[Waldo Alvarez Cañizares]

From: ros-kernel-bounces at reactos.com on behalf of welch at boltblue.com
Sent: Mon 3/8/2004 1:35 PM
To: ReactOS Kernel List
Subject: RE: [ros-kernel] Re: [ros-cvs] CVSUpdate: reactos- Supportof Matroxdisplay card

Quoting Waldo Alvarez Cañizares <wac at lab.matcom.uh.cu>:
> 
> hope you are David with a different e-mail -> welch at boltblue.com
>
That's right.

> yes it was:
>
> cmp 0x0, (%eax)
>
> That is what it should print? The same value of cr2?
> If it is, how do I get the value of that address stored in eax?
>

I don't understand the question: cr2 and eax will have the same value.
'(%eax)' means the dword in the location in memory pointed to by the contents
of eax. If the location isn't accessible then the processor stores its
address (=eax) in cr2 and traps to the operating system.

Yes, that was the answer I was expecting and yes,that was the question I did. Interesting, that explains some things to me. Thanks, thanks a lot. I have to spend some time with those Intel manuals for a while :)). RTFM!! (screming to myself) :)) I start tonight. I come from userland when you never deal with those registers. In fact that is one the reasons I am around, to be face to face with unknown things. Is very nice to talk to you, is like talking to the author of a book you have been reading very long time. So far the book is great!! I have enjoyed it a lot. And now I am enjoing to thank you for it. Again, thanks for teaching me.

My Best Regards
Waldo Alvarez

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